Low pressure fluid injection for recovering hydrocarbon material from low permeability formations

A process for producing hydrocarbon material from a subterranean formation comprising:

• injecting a first conditioning material at a first pressure which is at or above a fracture initiation pressure, via a wellbore, to effect fracturing of a subterranean formation such that a hydraulically fractured formation, including an induced fracture disposed in flow communication with naturally-occurring fractures of the subterranean formation such that flow-communicating, pre-conditioned naturally-occurring fractures, are obtained;
• after the fracturing, injecting post-fracturing conditioning material at a second pressure, via the wellbore, into the hydraulically fractured formation, wherein the injecting of the post-fracturing conditioning material is controlled within a range below the fracture initiation pressure to increase cross-sectional areas of the pre-conditioned naturally-occurring fractures such that conditioned naturally-occurring fractures are obtained;
• and
• after the injecting of the post-fracturing conditioning material, producing, via the wellbore, hydrocarbon material from the hydraulically fractured formation;
• wherein:
• the second pressure of the post-fracturing conditioning material is less than the first pressure of the first conditioning material and the fracturing initiation pressure;
• and
• the post-fracturing conditioning material includes proppant and drill cuttings.